seeking research papers
This very recent review should give you all the references you need
http://scitation.aip.org/content/aip/journal/jap/113/2/10.1063/1.4757907
We are using TDMAT and Ammonia, with N2 as purging gas to grow TiN in our ALD.
Also one can use TiCl4 precursor to grow TiN.